private final ReentrantReadWriteLock.ReadLock cacheRlock = cacheRwlock.readLock();
private final ReentrantReadWriteLock.WriteLock cacheWlock = cacheRwlock
.writeLock();
private final ReentrantReadWriteLock.ReadLock cacheRlock = cacheRwlock.readLock();
private final ReentrantReadWriteLock.WriteLock cacheWlock = cacheRwlock
.writeLock();